Conférence de l’Institut d’Astrophysique de Paris présentée par Francis Bernardeau, astrophysicien, directeur de l’IA, le 9 septembre 2014à l’IAP
Category Archives: Astrophysique
Cosmos et créativité par Hubert Reeves
A la découverte de l’univers
ExplorUnivers (Université de Nantes) par fr-universite-numerique
Peut-on vivre sur Mars ? Quelle est l’exoplanète habitable la plus proche ? Combien d’étoiles naissent par an dans une galaxie ? Et la Terre, d’où vient-elle ? Ce MOOC aborde notre compréhension actuelle de l’univers.
La matière noire dans la formation des galaxies
Alien Worlds: The Science of Exoplanet Discovery and Characterization
Alien Worlds will explore the techniques that are used to discover and characterize the thousands of planets (called exoplanets) known outside of our solar system.
About this Course
Have you ever wondered about planets in other solar systems? Have you ever thought about the possibility of life elsewhere in the Universe? For the first time in human history, we know that planets around other stars not only exist, but are common!
Alien Worlds focuses on the search and characterization of planets orbiting other stars (called extrasolar planets or “exoplanets”). Over the course of nine modules, we will learn some of the techniques used to discover the thousands of known exoplanets and will discuss how we can use basic scientific tools to characterize the sizes, masses, compositions, and atmospheres of exoplanets. We will also learn about the diversity of stars in the Galaxy to understand how stellar properties affect exoplanet detection techniques and influence planetary formation and habitability.
In addition to the exploration of exoplanets, students in Alien Worlds will gain a basic understanding of light, gravity and motion, and be introduced to some of the most extreme life on planet Earth. We will hear from experts at the forefront of exoplanet science and interact with other participants and instructors through social media and online tools. Students will leave Alien Worlds with a better understanding of their place in the Universe and the skills to comprehend the wealth of new discoveries surrounding the countless worlds around distant stars.
La formation et l’évolution des galaxies
Sociologie des populations de galaxies
Jean-Pierre Petit : cosmologie.
Segre Lecture: How Did The Universe Begin?
[youtube https://www.youtube.com/watch?v=e_4bMIqmV9U?rel=0&w=640&h=480]
Emilio Segre Distinguished Lecture by Andrew Lange: How Did the Universe Begin?
There is strong evidence that the entire Universe sprang from sub-atomic dimensions 13.7 billion years ago in a violent event known as Inflation, but we understand almost nothing of what would have caused this to happen. Scientists around the world are now racing to find important clues in the Cosmic Microwave Background, the faint relic of the primeval fireball that filled the early Universe.